| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Bifidobacterium thermacidophilum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium subtile | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium stellenboschense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium simiarum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium scardovii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium scaligerum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium samirii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium saguini | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium ruminantium | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium rousetti | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium reuteri | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium ramosum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pullorum subsp. saeculare | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pullorum subsp. pullorum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pullorum subsp. gallinarum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pullorum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium psychraerophilum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pseudolongum subsp. pseudolongum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pseudolongum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium pseudocatenulatum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium primatium | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium porcinum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium parmae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium panos | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium olomucense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium oedipodis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium myosotis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium moukalabense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium moraviense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Bifidobacterium mongoliense | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |